(19)
(11) EP 2 220 666 A1

(12)

(43) Date of publication:
25.08.2010 Bulletin 2010/34

(21) Application number: 08864581.7

(22) Date of filing: 17.12.2008
(51) International Patent Classification (IPC): 
H01H 71/74(2006.01)
(86) International application number:
PCT/IB2008/003513
(87) International publication number:
WO 2009/081255 (02.07.2009 Gazette 2009/27)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 18.12.2007 US 958938

(71) Applicant: Eaton Corporation
Cleveland, Ohio 44114-2584 (US)

(72) Inventors:
  • ROBINSON, Judy, A.
    Atlanta, GA 30341 (US)
  • CARLINO, Harry, J.
    Export, PA 15632 (US)
  • ZINDLER, Mark, O.
    Mckees Rocks, PA 15136 (US)

(74) Representative: Wagner, Karl H. 
Wagner & Geyer Gewürzmühlstrasse 5
80538 Munich
80538 Munich (DE)

   


(54) TRIP UNIT AND ELECTRICAL SWITCHING APPARATUS INCLUDING A MOVABLE INDICATOR TO INDICATE SELECTION OF AN ARC REDUCTION MAINTENANCE SYSTEM CURRENT CONDITION